feat(color-picker): add color-picker extension

extensions/color-picker/.gitignore

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+node_modules
+vicinae-env.d.ts

extensions/color-picker/README.md

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+# Color Picker for Vicinae
+
+A powerful color picker, manager, and converter extension for **Vicinae** on **Linux**, ported and adapted from Raycast's Color Picker.
+
+Supported on **Linux** (GNOME, KDE, Hyprland, Sway, Wayland, and X11).
+
+---
+
+## Commands
+
+### `pick-color` - Pick Color
+Activates a screen loupe/eyedropper across your monitors, allowing you to sample any pixel.
+- Copies the sampled color directly to the clipboard in your preferred format.
+- Adds the color to your persistent color history.
+- Shows a HUD confirmation with the copied color.
+
+### `organize-colors` - Organize Colors
+Manage, search, and export your picked color history.
+- View in grid mode (with live SVG color swatches) or list mode.
+- Pin your favorite colors to the top.
+- Rename colors with custom titles.
+- Copy colors in 12 different formats (HEX, RGB, RGBA, HSL, HSV, OKLCH, LCH, Display P3, etc.).
+- Export colors as CSS variables, CSS classes, or JSON.
+- Trigger color sampling directly with a single click.
+
+### `favorite-colors` - Favorite Colors
+Quick access to all colors pinned as favorites in Organize Colors.
+
+### `convert-color` - Convert Color
+Universal color conversion tool. Pass any color format (or enter one in the search bar) to immediately get conversions in all major formats with one-click copy.
+
+### `color-names` - Color Names
+Search and identify colors by their descriptive names using the `color-namer` palette.
+
+### `color-wheel` - Color Wheel Reference
+Displays an RGB spectrum color wheel reference with quick access to the desktop screen picker.
+
+---
+
+## Screen Picker Architecture
+
+- **Linux**: Uses D-Bus color picking through `org.freedesktop.portal.Screenshot.PickColor` and `org.gnome.Shell.Screenshot.PickColor`.
+
+---
+
+## Preferences
+
+- **Color Format**: Default format when copying picked colors (`HEX`, `HEX Lower Case`, `HEX No Prefix`, `RGB`, `RGB %`, `RGBA`, `RGBA %`, `HSLA`, `HSVA`, `OKLCH`, `LCH`, `P3`).
+- **Show color name after picking**: Optionally show the matched color name in the notification after sampling.
+- **Primary Action**: Configure whether selecting a color copies it to the clipboard or pastes it directly to the frontmost application.
+
+---
+
+## Credits
+
+- Ported and maintained for Vicinae by [manuelcontrera](https://github.com/manuelcontrera).
+- Original Raycast extension created by [thomas](https://github.com/thomas).

extensions/color-picker/assets/bin/picker-linux.py

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+#!/usr/bin/env python3
+import sys
+import json
+import uuid
+
+def try_gnome(bus):
+    try:
+        from gi.repository import Gio
+        proxy = Gio.DBusProxy.new_sync(
+            bus,
+            Gio.DBusProxyFlags.NONE,
+            None,
+            'org.gnome.Shell.Screenshot',
+            '/org/gnome/Shell/Screenshot',
+            'org.gnome.Shell.Screenshot',
+            None
+        )
+        res = proxy.call_sync('PickColor', None, Gio.DBusCallFlags.NONE, 60000, None)
+        val = res.unpack()[0]
+        if 'color' in val:
+            r, g, b = val['color']
+            return {
+                "red": float(r),
+                "green": float(g),
+                "blue": float(b),
+                "alpha": 1.0,
+                "colorSpace": "sRGB"
+            }
+        return None
+    except Exception as e:
+        err_msg = str(e).lower()
+        if "cancel" in err_msg or "abort" in err_msg or "dismiss" in err_msg:
+            return "CANCELLED"
+        return None
+
+def try_portal(bus):
+    try:
+        from gi.repository import Gio, GLib
+        loop = GLib.MainLoop()
+        token = "picker_" + uuid.uuid4().hex[:8]
+        sender = bus.get_unique_name()[1:].replace('.', '_')
+        handle_path = f"/org/freedesktop/portal/desktop/request/{sender}/{token}"
+
+        result_color = None
+
+        def on_signal(connection, sender_name, object_path, interface_name, signal_name, parameters, user_data):
+            nonlocal result_color
+            try:
+                response_code, results = parameters.unpack()
+                if response_code == 0 and 'color' in results:
+                    r, g, b = results['color']
+                    result_color = {
+                        "red": float(r),
+                        "green": float(g),
+                        "blue": float(b),
+                        "alpha": 1.0,
+                        "colorSpace": "sRGB"
+                    }
+            finally:
+                loop.quit()
+
+        bus.signal_subscribe(
+            None,
+            "org.freedesktop.portal.Request",
+            "Response",
+            handle_path,
+            None,
+            Gio.DBusSignalFlags.NONE,
+            on_signal,
+            None
+        )
+
+        params = GLib.Variant.new_tuple(
+            GLib.Variant.new_string(""),
+            GLib.Variant('a{sv}', {'handle_token': GLib.Variant('s', token)})
+        )
+
+        bus.call_sync(
+            "org.freedesktop.portal.Desktop",
+            "/org/freedesktop/portal/desktop",
+            "org.freedesktop.portal.Screenshot",
+            "PickColor",
+            params,
+            None,
+            Gio.DBusCallFlags.NONE,
+            -1,
+            None
+        )
+        loop.run()
+        return result_color
+    except Exception:
+        return None
+
+def main():
+    try:
+        from gi.repository import Gio
+        bus = Gio.bus_get_sync(Gio.BusType.SESSION, None)
+    except Exception as e:
+        sys.stderr.write(f"Failed to connect to D-Bus: {e}\n")
+        sys.exit(2)
+
+    # 1. First try GNOME Shell native loupe (direct, no portal prompt)
+    color = try_gnome(bus)
+    if color == "CANCELLED":
+        sys.exit(1)
+    if color:
+        print(json.dumps(color))
+        sys.exit(0)
+
+    # 2. Fallback to XDG Desktop Portal (KDE, Wayland compositors)
+    color = try_portal(bus)
+    if color:
+        print(json.dumps(color))
+        sys.exit(0)
+
+    sys.exit(1)
+
+if __name__ == "__main__":
+    main()